Triazine-based Rubber Accelerator TZ from Germany
TZ (2-mercapto-4,6-bis(pentylamino)-s-triazine) functions as a delayed-action vulcanization accelerator for natural and synthetic rubber, improving processing safety. Classified under HTS 2933.69.60.30 as it contains an unfused triazine ring and is principally used in rubber processing, fitting Chapter 29's scope for separate chemically defined compounds.
Duty Rate — Germany → United States
3.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Import Tips
• Include end-use statements specifying rubber vulcanization to justify 2933.69.60.30 over general triazine codes; CBP often challenges accelerator classifications
• Test for >95% purity to avoid reclassification as mixtures under Chapter 38; declare CAS 59619-57-0 explicitly